Top Description Fields Constructors Methods

org.jparsec

pack-priv Class Lexicon

Class Inheritance

extends Object

java.lang.Object
org.jparsec.Lexicon

Known Direct Subclasses

org.jparsec.Terminals

Static Imports

org.jparsec.internal.util.Checks.checkArgument

A Lexicon is a group of lexical words that can be tokenized by a single tokenizer.

Author: Ben Yu

Field Summary

Modifier and Type	Field and Description
pack-priv final Parser<?>	tokenizer The scanner that recognizes any of the lexical word.
pack-priv final Function<String, Object>	words Maps lexical word name to token value.

Constructor Summary

Access	Constructor and Description
pack-priv	Lexicon(Function<String, Object> words, Parser<?> tokenizer)

Method Summary

Modifier and Type	Method and Description
pack-priv static <F, T> Function<F, T>	fallback(Function<F, T> function, Function<? super F, ? extends T> defaultFunction) Returns a `Function` that delegates to `function` and falls back to `defaultFunction` for null return values.
public Parser<?>	phrase(String... tokenNames) A `Parser` that recognizes a sequence of tokens identified by `tokenNames`, as an atomic step.
public Parser<Token>	token(String... tokenNames) A `Parser` that recognizes a token identified by any of `tokenNames`.
public Parser<Token>	token(String tokenName) A `Parser` that recognizes the token identified by `tokenName`.
public Parser<?>	tokenizer() Returns the tokenizer that tokenizes all terminals (operators, keywords, identifiers etc.) managed in this instance.
pack-priv Lexicon	union(Lexicon that) Returns a `Lexicon` instance that's a union of `this` and `that`.
pack-priv Object	Returns: the token object. word(String the token text. name) Gets the token value identified by the token text.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

tokenizer	back to summary
pack-priv final Parser<?> tokenizer The scanner that recognizes any of the lexical word.

words	back to summary
pack-priv final Function<String, Object> words Maps lexical word name to token value.

Constructor Detail

Lexicon	back to summary
pack-priv Lexicon(Function<String, Object> words, Parser<?> tokenizer)

Method Detail

fallback	back to summary
pack-priv static <F, T> Function<F, T> fallback(Function<F, T> function, Function<? super F, ? extends T> defaultFunction) Returns a `Function` that delegates to `function` and falls back to `defaultFunction` for null return values.

phrase	back to summary
public Parser<?> phrase(String... tokenNames) A `Parser` that recognizes a sequence of tokens identified by `tokenNames`, as an atomic step.

token	back to summary
public Parser<Token> token(String... tokenNames) A `Parser` that recognizes a token identified by any of `tokenNames`.

token	back to summary
public Parser<Token> token(String tokenName) A `Parser` that recognizes the token identified by `tokenName`.

tokenizer	back to summary
public Parser<?> tokenizer() Returns the tokenizer that tokenizes all terminals (operators, keywords, identifiers etc.) managed in this instance.

union	back to summary
pack-priv Lexicon union(Lexicon that) Returns a `Lexicon` instance that's a union of `this` and `that`.

word

back to summary

pack-priv Object word(String name)

Gets the token value identified by the token text. This text is the operator or the keyword.

Parameters

name:String: the token text.

Returns:Object

the token object.

Annotations

@Private

Exceptions

IllegalArgumentException:: if the token object does not exist.